Grain-door



H. H. WHEELER AND H. I. NILSON.

GRAIN DOOR.

APPLICATION FILED MAR. 22, 1920.

Patented 0@t.19,1920.

3 SHEETS-SHEET I.

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IYI I I I I I IJIQI I I I I ILIM A /A/Vf' H. H. WHEELER AND H. 1. NILsoN. GRAIN DOOR.

K APPLICATION FILED MAR. 22, 1920. l 1,8559374@ Patented 0ct.19,.1920.

3SHEETS-SHEET2.

IIIILIIIIIILIIIIIIIIILA/ g o E) O lIll l' y o I I I I I I I I I I ,I I l o I I I I I I I H. H. WHEELER AND H. I. NILS'ON.

GRAIN DOOR.

APPLICATION FILED MAR` 22. 1920. 1,355,874.

UNITED STATES/PATENT OFFICE. ,i

HAROLD WHEELEE Ann HERBERT FJ.' NILSON, oE'LoEATNE, NETH DAKOTA.

GRAIN-Doon..

, secieanon of Eetters Patent., Patented Oct. v19, 11920.

Application filed March 22, 1920. Serial No. 367,597.

To @ZZ whom t mayiconcern: A

Be it known that we, HAROLD H. WHEELER and HERBERT J. NILsoN, citizens of the United States, residing at Loraine, inthe county of Renville `and lState 'of'V North Dakota, have invented certain new and usefullmprovements in Grain-Doors; and we do hereby declarethe following to be a full, clear, and exact description of the invention, suchV as willV enable .others skilled in the art to which itv appertainsto make and use the same; Y V p Our invention has for its object to yprovide an extremely simple and highlyeiiicient grain door for cars, and to this end,

` it consists of the novel devices andcombina'- tions of'devices hereinafter described and defined in the claims. -Y l In the accompanying drawings,r which illustrate the invention, like charactersindicate like parts throughout the several views.

Referring to the drawings Figure 1 is a fragmentary perspective viewvof a box car body having our improved grain door installedv therein`looking at the saine from the inside-of said body and with the grain door closed; y

Fig. 2 is a view corresponding to'Fig. 1, with the exception that the outer door section rhas been partly opened to produce be,- tween the door sections a relief port;

Fig. 3 is a transverse verticalA section taken onv the line 3-3 of Fig. 1, on an enlarged scale; f f i Fig. L is an elevational'view in part section showing the track bar and gear and Fig. 5 is a detail view in transverse section taken on the line 5-5 of Fig. 4.

The numeral 6 indicates an ordinary boX car body having in itssides the usual door openings formedfbetween door posts 7y and provided with sliding outside doors 8. Secured tol the'inside of the car body 6, at each side of the door opening, is a sheath 9 pref.

erably formed from sheet metal and entirely closed except for a y door opening and a ygrain escape passageway 10 at the bottom thereof. These sheaths 9 are `shallow and take yup very little room inthe car body. At the door opening in each sheath V9 is a supplemental door post V11, which bears' Aagainstthe inner facevof said sheath and is secured to the Hoor and top of the car body 6.

The improved grain door comprises inner and outer sections 12 and 13, respectively, mounted for reversefsliding movementin sively increases in size the sheaths 9. These door seotions-12 and 13 are preferably formed from sheet metal vand may be. slid'compl'etely into the sheaths 9 so that they areentirely out of the way,

or .slid part way out :of said sheaths into yoverlapping arrangement tolclose the door lVhenthe door sections 12 and 13 are closed, they overlap both Adoor posts 7' opening.

to securely hold' said sections against out'- ward pressure. To further assist in hold'- ning the doorfsections against outward pressure, there is secured to the floor of the car bodyG, outward of the door sections, a cleat v14. The overlapping vertical edgesofthe door sections 12 and, 13 are oblique in respoot to each other, V and preferably, as

` shown, .said overlapping edges are both beveled downwardly and backwardly to pro duce therebetween, when the outer door section is opened, va reliefipo'rt 15 that progresisy opened. Y f

A horizontal reinforcing bar 16 is secured to `the inner door section substantially at the vertical centerfthereof and has a length substantially equal to the width of vsaid door section so as to overlap the door posts 7 when said door section is closed. The end of the reinforcing bar` 16, which projects beyond' the oblique edge of the inner door section 12, has formed thereon a hook 17 arranged to interlock witha pinl or lockV lug 18 on one of the supplemental door posts 11 and thereby lhold said inner door section closed. On the top edgeof theouter as said doory section so i door vsection 13, is an inwardly projecting 'i track bar 19 which rests upon thetop edge of the inner door section 12. and slidably supports said outer door section thereon. By reference to Fig. 5, it will benoted that the top edge of the'inn'er door' section 12 is also bent slightly inward to afford a reinforcing iange. Y A l On the iV ner edge'oftheitrackbar 19, is a downturned ange 20. whichoverlaps theflanged upper edge of the inner door section 12 and thereby Vlocks the two door sections together at their top edges' against' lat,-` eral movement in respect to each other.

I The flanged track bar 19Y also guides the two door sections for naralle'lsliding movement.

The track bar 19 is ofsuch'length as to overlap the door posts 7 when the outer door section 13 is closed and thereby materially reinforces and holds the door. sections ,y

against outward pressure.`

Y certain ofthe gear teeth" 21.

Formed on the top of the track bar 19 are lon itudinally spaced gear teeth 21, which mei with a pinion 22 journaled in one of the sheaths9. The pinion 22 may be ro-V tated to impart endwise sliding movement to i the outer door section 12 by means of a hand wheel 23 secured to the inner end of the shaft of said pinion. K In some instances, it v might be desirable to provide the shaft of the pinion with means for operating said pinion from the outside of the car body. To hold the outer VVdoor section 13 closed,

p there is -pivoted at one of the door posts 7 a lock finger 24 arranged to restion the track bar` 19 under the action ofl gravity between` If desired, anti-friction devices maybe Y provided for the'inner door section to cause the same to slide more easily,v and, likewise, anti-friction devices may be interposed be-u tweenthe trackbar 19 and the top of the inner door section 12 to 'cause the outer door section 13 to slide more easily.

1To' unloadgrain from a car having our improved grain door installedthereimit is only necessary toslightly open the outside door section 13 by manipulating the'liand wheel 23 and thereby produce between the door sections 12 and 13 a relatively small grain release port 15. As the pressure of the grain is relieved from the door, the wheel 23'can be operated from time to time to increasethe sizeof the escape port 15, and

finally the outer door section may be moved into a complete open position. The oper` a'tor may thenget intothe car, if necessary, and open the inner door section 12 to complete the unloading of the car.

From the above description, it is evident that our improved grain door may be installed in a car: body without cutting or otherwise mutilating the same, and it does not, in any way, interfere with the customary outsi e doors, or the use of wooden doorsif it is desiredV to use the saine when loading-cars `with coal. or other bulk commodities. c c y A What we claim ist- Y 1. The combination with a car body having a side door opening, of a grain door for the y door opening comprising two sections mounted on opposite sides of the door opening for sliding movement into overlapping arrangement to close the door opening, the overlapping vertical edges of the door sections being in oblique relation to each other to produce therebetween a 'relief port Vwhen one vof the door sections is opened and which relief port progressively increases in size as said door section is opened.

` 2.*The combination with a car body havinga side door opening, of a grain door for the door opening comprising two sections mounted on opposite sides of the door opening for sliding movement into overlapping arrangement to close the door opening, the overlapping vertical edges of the door sections being beveled backwardly anddownwardly from ltheir top edges to produce therebetween a relief port when one of the door sections is opened and which relief port progressively increases in size as saidY door section is opened.

3. The combination with a cail body having a side door opening, of agrain door for the door opening comprising .two sec-` tions mounted on oppositesides ofthe door openingv for sliding movement into over-V lapping arrangement to close the door opening, the overlapping vertical edges of the door sections 'being in oblique relation'to each other to produce therebetween a relief port when one of the door sections is opened and which, relief port progressively iiicreases in size as said door section is opened, said door sections being of such length at their tops-as to overlap the car body at the door opening when closed. v

,v ,4. The co'mbinationzwith a car body having a side door opening, of a grain kdoor for the door opening comprising inner and outer lsections mounted on opposite sides of the door opening for sliding movement into overlappingarrangement toV close the doorv opening, the overlapping vertical edges ofv the door sections vloeinginoblique relation to each other to produce therebetween a reliefport whenV one of the door sections is opened and which relief port Vprogressively s to each other to produce therebetween a relief port whenone of the door sections is opened and which relief port progressively increases in Vsize as said door section is opened, said inner door section being provided with a reinforcing bar of such length as to overlap' the car body at thedoor openy ing when said inner door section'is closed, and lock elements on the reinforcing bar `and a part secured to the car bodyrfor holding the inner door section closed.

6. The combination withy a carbody havl ing a side door opening, of a grain door for the door opening comprising inner anch outer sections mounted on opposite sides of the door opening for slidingrmovement into overlapping arrangement to close the door opening, theoverlapping vertical edges of the door sections being in oblique relation to each other to produce Atherebetween a relief port when one of the door sections is opened and which relief port progressively increases in size as said door section is opened, said inner door section being provided with a reinforcing bar of such length as to overlap the car body at the door opening when said inner door section is closed, said outer door section beingslidably supported on the inner door section.

7. The combination with a car body having a side door opening, of a grain door forsthe door. opening comprising inner and outer sections mounted on opposite sides of the door opening for sliding movement into overlapping arrangement to close the door opening, the overlapping verticaledges of the door sections being in oblique relation to each other to produce therebetween a relief port when one of the door sections is opened and which relief port progressively increases in. size as said door section is opened, said inner door section being provided with a reinforcing bar of such length as'to overlap the car body at the door opening when said inner door section is closed, said outer door section having on its top edge a track bar mounted on the inner door section and slidably supporting said outer door section therefrom and lock the door sections together against lateal movement at their top edges( 8. The combination with a car body having a side door opening, of a grain door for the door opening comprising inner and outer sections mounted on opposite sides of the door opening for sliding movement into overlapping arrangement to close the door opening, the door sections being in oblique relation to each other to produce therebetween a relief port when one of the door sections is opened and which relief port progressively increases in size as said door section is ope-ned, said inner door section being provided with a reinforcing bar of such length as to overlap the car body at the door opening when sait inner door section is closed, said outer door section having on its top edge a toothequipped track bar mounted on the inner door section and slidably supporting said outer door section therefrom and lock the door sections together against lateral movement at their top edges, a pinion journaled on the car body and meshing with the teeth on the track bar, and means for operating the pinion to impart sliding' movement to the outer door section.

9. rlhe combination with acar body having a side door opening, of a grain door for the door opening comprising inner and the overlapping vertical edges ofv outer sections mounted on opposite sides of the door opening for sliding movement into `overlapping arrangement to close the door lap the car body at the door opening when i said inner door section is closed, said outer door section having on its top edge a toothequipped track bar mounted on the inner door section and slidably supporting said outer door section therefrom and lock the door sections together against lateral movement at their top edges, a pinion journalefl on the car body and meshing with the teeth on the track bar, means for operating the pinion to impart sliding movement to the outer door section, and a lock on the car body arranged to be moved into a position to be engaged by the teeth of the track member to hold the outer door section closed.

10. The combination with a car body having a side door'opening, of a sheath secured to the car body at each side of the door opening, a grain door for the door opening comprising two sections mounted in said sheaths for sliding movement into overlapping argangement to close the door opening, the overlapping vertical edges of the door sections being in oblique relation to each other to' produce therebetween a relief port when one ofthe door sections is opened and whichrelief port progressively increases in size as said door section is opened. 1i. The combination with a car body having a side door opening, of a sheath secured to the car body at each side of the door opening, a grain door for the door opening comprising two sections mounted in said sheaths for sliding movement into overlapping arrangement to closl the door Lopening, theoverlapping vertical edges of the door sections being in oblique relation to each other to produce therebetween a relief port when one of the door sections is opened and which relief port progressively increases in size as said door` section is opened, eachcof said sheaths being provided Vwith a grain escape passageway.

In testimony whereof We aiiX our signatures in presence of two witnesses. i

HAROLD H. VHEELE i. HERBERT J. NILSON. Witnesses:

F. J. IWERT, M. B. SHoLAAs. 

